Transmission-gearing.



C. S. BROWN. THANsMlssloN GEAmN APPLICATION HLED MAY I8. |914.

Patl anted Feb; 20, 1917.

3 SHEETS-SHEET l.

WJTNESSES.-

TOR.

C. S. BROWN. mmsmlsslow GEARJNG..

Y A'PPLICATIDN FILED MAY 18| |914. 1,21 6,41 O.

n( 3 SHEETS-SHEET 2.

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Patented Feb. 20, 1917.

Af-ZTORNEYS.,

C. S. BROWN. TRANSMISSION G'EAnlNG. APPLICATHN FILEDv MAY l1, l9|4.Patented Feb.

` 3 SHEETS-SHEET 3.

HIIIII IIINII H NU Hnlullllgllll lllllllllml' N Ji. N Plllllllllllllllzllll-IIJII IINIHI lUNITED STATES PATENT OFFICE.

CHARLES S. BROWN. OF SYRACUSE. l' EW YORK.

TRANSMISSION-GEARING.

Specification of Letters Patent.

Patented Feb, 2.0, 1917.

Application filed May 18. 19 14. Serial No. 839.348.

iu the combinations and constructions herally, a Idriving element, driren shafts oon-V inal'tcr set forth and claimed.

lln'describingr this in\"eution, reference is' hajd to the :it-companringl dra wings, in which like "characters designate eorrcspomling.'`parts in all the views.

lfiirurv l is a sectional view of my gearingffitlie contiguous |iartsotl the tractor to which it is applied being also shown.l 4 l"i{ is aplan View of a traction machine for which this gearing,r is adapted.`

' lifibl. 3 a rear elevation otl the machine,

parts being,r tnnitted nectedto the traction wheels of the machine, andmeans for connecting and disconnectidg: the sha l'ts and the dri ringelement; and

as here illust-rated it includes alsorcversing shafts connectedreslwctirely to the traetion wheels. and means 'for connecting and dis-'I connecting: the reversing shafts and the drivin#r element. theconnecting means being o|nralleto connect any one of the driven andrevel-slug shafts to the driving element,

"or for connectingr to t'he driving` elementthe driven 'shaft actuatingrone traetio'n wheel ol4 the machine and the reversing shaft actuatingthe other traction wheel.

.\|orv spceilically` the transmission gear-r,

ing includesl la driving element including a 'dlll'crcntlal geni-ingr,drlven shafts and -means for connecting and disconnecting the drivenshafts to opposite gea rs of the ditfcrential 'gcarngand for making thedill'erential gear inell'eetivv whereby both driven shafts may beactuated for\\"ardly or either one actuated forwardlv independent-l)I ofthe other. 'I hc genuini; also includes reversing shafts, powertransmitting connections between the reversing shafts and opposite gearsof the dilfvrvntial rervaring', and means v'for operating the powert'ansmitting connections to connect both reversing shafts to the.ditlcrential gearing or to disconnect villa-1 one from and connect theother to, the diltcrcntrd gearing. or to connect one ot' the driven shil'ts to one gear of the dittereib tial gvariugjnd one of the reversingshafts -to thv oppostefear ol' thv ditlcrential gearltion wheel touchesthe ground. orone tra-ef tion wheel ca'i be driven in a forwarddirection whihl the other is driven in a rearward.

direction: thus moving the vehicle about a center locate( betweenithvtraction wheels, this center be ng determined b v the position of thehand operated steeringlr wheel.

l dcsignatis the frame of a tractor 0l' other machine equipped with in vinvention. 2 are the driving wheels hioscly mounted on axles I5.supported b the frame 1. -t designates the stee 'ing whccl located at;the front cnd ot' the fr: me t and voperated by suitable steeringr meelanism that is here shown as inclndixr;r a vorm whccl 5 mounted on thespindle ot' thi` l'orhs u supporting the front wheel t. and a worm Tmeshing with the. worm wheel a `nl mounted on a statt' Shaving a handwhec located within reach of the ,-svat' o'l' the m: chine.

4) designates' tht` motor` and l() a shaft driven by l-he motor, whichshaft transmits the power ot' the motor to the gearing, a frictionclutel 10 being:4 interposed between the motor sha f t and the sha ft10. 1l designates the dri'iug element as a whole, this driving` elementincluding a casing 12 snpot'fears 1T a 41d IS of dill'ervut diana-ters`these gears be ng mounted on the casing 12 to rotate the sunc. The gearsl? and 1S receive power from the shaft and are connected to the shaft 10by means of pinions 19' and 20 here shown as slidable on the shaft 10andmormallly occupying 'a neutral position and beingshiftable 'as aunit'in one@ direction from .a neutral position'to carry!!- the pinion19 in mesh with the gear 17, andi inthe opposite directionfrom neutralposi-if tion to carry the pinion 20 into mesh with," the gear 1 ,p Thehubs 16 of the casing 12 are jour(- naled in suitable bearings 21supported by. j the frame 1 in any'suitable manner. 22 are driven shaftsconnected to opp,- ,l site gears 13 of the differential gearing, andbeing 'here shgwn as arranged end to end and coaxiallywith, the shaftsections and?" having reduced ends 23 journaled in axial sockets formedin the outer ends of the shaft sections 15. The outerend portions of theshaft sections 22 are journaled in suitable bearings 24 supported'in anysuitable manner by the frame 1. Said shafts 22 carry gears 25- meshingwith gears 26 carn'ed by the tractor wheels 2. t l v l'gedriven shafts22 .maybe connected to,- -o disconnected from, theeshaft sections 15 .bymeans of shiftable clutch sections 27 movable axiallyon said shafts 22into and "out of engagement with clutch teeth 28 carried by the shaftSeCtins 15. .A

29 arereversing shafts usually arran ed in the rear ofthe shafts 22 andpara lel therewith and journaled at their opposite ends in bearings 30and 31 supported by the frame 1, the reversing shafts carrying gears 32at their opposite ends which also mesh with the gears 26. The axle' 33which carriesl at its ends the s indlesfhas its intermediate part droppein order to accommo-` date this transmission gearing.

The reversing shafts 29 are normally disconnected f-rom the gears 13respectively and are connected thereto by suitable powerftransmttingmechanism and means for connecting and disconnectin the mechanism andthe reversin shafts. he power transmitting mechanism includes spur ears34 and 35 carried respectively by the s aft sections 15 and thereversing shafts 29, the gears 34 being securedv to annular flanges 36at the outer ends of the shaft sections 15, and the gear 35 beingcarried by the clutch sections 37 mounted on the shafts 29. The clutchteeth 28, reviously referred to, are here shown as fbrmed integrali withthe gears 34.

38 are shiftableclutch Sectio 4slidable on the reversing shafts 29 respely, and rotatable therewith and shifta into and out of connection withthe clutch sections 37. I The gears 19 and 20 and the clutch sections 27and 38 may be shifted in any suitable manner, and are here shown asprovided 65 with annular grooves which receive shifting traction wheelsis disconnected from the vdriving element. and the machine-is being Atoturn a corner or turn the machine around,

forks, and any suitable shifting mechanisms malty be provided therefor.his transmission gearing is provided with means for locking thedifferential from movement comprising bolts 39 carried by av 70shiftable member or clutch-40, the bolts b'eing movable through the case12 into holes in one of the gears 13. The differential gear is lockedfrom movement when either ofthe turned either forwardly or rearwardly bythe other traction wheel'. The member 40 is operated by a shifting lever41. The lock may be also'thrown in effective position to preventoperation of the di'erential when driving straight, as when from thecharacter of the ground one wheel might'receive more drivingmovementthan the other.

I have here-shown 'one clutch section 27 and one clutch4 Asection 38 ascoupled together by a lever 42 pivoted between' its ends and Voperatingforks v43, 44 at the opposite ends of thelever, the forks engaging theclutch sections 27 and 38. Movement of the lever 42 to carry the clutchsection 27 into operative engagementwith the'clutch teeth 28 moves'theclutch section 38 farther out of its neutral position; and movement ofthe lever 46 to carry the clutch section38 into ries the clutch section27-farther outfof" its neutral position. lThe Vlevers "are mounted on,or connected to, vertical rock shafts 45 having hand levers 46 at theirupper ends. 100 This transmission gearing is particularly adapted to beu sed in tractors carrying agrig cultural implements, as for instancelows, and is partlcularly advantageous in t at it can turn rearwardly orforward1 y andc'ah .105 make short turnsas `thasituati)if requires. Inoperation, in going straight ahead, th double ear 19, 20is shiftedA sothat it is in mesh with either the gear 1'7 or 18, and both clutches 27are shifted into engagement with 110 the clutch` teeth l28 and the'machine is` steered by means ofA the front Wheel 4. When it 1snecessaryto make a short turn in one direction or the other, as to-'the left lllthe clutch section 27, associated with the left hand gear of thediferential, can be 'shifted outwardly and the 1 differential gearinglocked by operatingthe clutch 40-so that the power is transmitted -o'nltd'the right hand tractor 2.-Whe'n -it is esiredto back y up, th clutch4Sections 27a-re shifted to neutral osition and both clutch sections 38shifted into engagement with the clutch teeth 37. If it is desired toback up and 12a turn a sharper corner', one of the 'clutchfsections 38is shifted out of operative position, while the other clutch 'section 38remains in` operative position andthe differential gear iocked so thatbut one traction wheel 2 re- 130 ceives power in theV reverse direction.When it is necessaril to turn about a still sharper eorner or to turnthe machine in a slnall space` one of the clutches 2 is shifted intooperative position while the other clutch 2T is shifted out of operativeposition, and the eluteh 3S on the same side of the maA chine as theformer clutch 2T is shifted out of operative position; while the othereluteh 3H on the opposite side of the machine is shifted into operativeposition so that one traction wheell drives forwardly and the otherdrives rearwardlv. For instance. when vthe right hand clutch section 2Tand the left hand clutch seetion 3H are shifted into 4operativeposition. and theleft hand eluteh section 2T and the right hand elutchseetion ''are shifted 'out of operative position the right hand tractionwheel will drive 'forwardly while the left hand traction wheel willdrive rearwardly. Thus the machine will turn about centers located atthe point either traction wheel engages the ground, o' about centerlocated between the traction wheels i 'llat l claim is:

l'. 'l`l`ie combination of a vehicle havingr av |mi1j-ot-traetionwheels: of a transmission gearing:` comprising. a drivingr element. apair of shafts connected respectively. tothe traction wheels. a pair ofreversing.r shafts eonneeted respeetivelv to the traction wheels,meansfor conrwctiner and discomna-tingany one of the shafts and thedriving'element and for Aconnecting.r the dri viner shaft aetuating."Ione traction wheel. and the reversing shaft aetuatilney the othertraetion wheel, substantially as and for the purpose, specitiedg'transmission gearing! comprising a driving element includiui,r Aaditl'erential gearing. driven shafts. means for connect ing anddiseonnet-ting,r either driven shaft :'hd opposite gears ot' thedillerential inde pendentlv of the other driven shaft, and means forlockiner the ditlerential. substantially as and for the purposedescribed, 3. A transmission ,11cm-iner eomprisinpr a driving elementincluding.r a dill'erential gearing. driven shafts. means for connectingand diseonuectin er the driven shafts and opposite gears of thedill'erential gearing, and means for locking the differential llearing.substantially as and for the purpose spccilied.

4. A transmission gearing eomprising.,Y a drivini,r element including 'adifferential gearingr and shaft sections actuated by the gearinef.driven shafts, means for connect.-v

iner and ilisconluretiner the driven shafts and the shaft sections, andmeans for locking the dill'erential gearing, substantially as and forthe purpose set forth.

' 5. A transmission gearing comprising a driving clement including adifferential gearing. driven shafts, means for connecting anddiseonnecti ig the driven shafts and opposite gears of the differentialgearing, re vel-sing shafts, power transmitting connections between tieopposite `gears of the differential ,e'earix ,e and the reversingshafts, means for coun lcling,r and disconnecting the power transmitjneYconnections and the reversuf.Y shafts, and means for looking thedifferential `rea ine. substantially as and for the. purpose described.

ti. A transmission gearing comprising,r a drivingnIA element including'a ditierential gearing.- driven shafts and reversing shafts, means foreouni ketiut; and disconnecting each driven shaft and each reversingYshaft to opposite le'ears of the ditferential gearing, and means forlocltiingr the differentialI gearing. substantiadv as and for thepurpose specified.

T. In a transmission gearinga driving element including a differentialgearing, driven shafts. l leans for connecting and dis connecting eitler or both driven shafts to opposite gears respectivel \T of thedifferential gearing! wl erehy said driven shafts may he both drivelforwardly or either forwardly while the other remains idle., andy meansforint-l ing the. differential gearing, substantially :s and for thepurpose set forth.

S, In a traismission gearinf, a driving element including a differentialgearing, driven shafts, reversing shafts, means for connecting either orboth of the driven shafts to opp( site lgears of the differentialgearing, mears .for looking the differential irearinir. and means forconnecting either or both of the reversing! shafts to opposite gears ofthe differential gearingl u'liercb) the d iven shafts may both beconnected to rota:e in a forward direction, or either shaft n ay he.actuated in a fin-ward direction whil: the other remains lidle andwhere-hv both reversing shafts may he con nected to the drivin;` elementor either con neeted thereto while the other remains idle, and whereby tither one of the driven shafts may he. conne( ted to rotate forwardlywhile the reverse shaft connected to the opposite. gear of the diferential gearing may be eonnected theretc. substantially as and for thepurpose descr bed.

9. In a gearing, a` driving element ineluding a differential gearing andshaft sections upon which opposite gears of the differential gearing!`are mounted, driven shaftsarralmnl end to end with they shaft sections,respectively, means for connecting and diseo meeting the driven shaftsand the shaft seeons, and means for locking ther differential gearingfrom differential movement, suistautially as and for the pur; pose setfortli.

10. A transmission gearing comprising a driving element including adifferential driving element including a differential gearihg, andsha-ft sections actuated by the gearing, driven shafts arranged end toend with the shaft sections, reversing shafts arranged substantiallyparallel to the driven sha ts, ower transmitting connections between t eshaft sections and the reversing shafts, means for .connecting anddisconnecting the driven shafts directly to said shaft sections, andmeans for connecting and disconnecting the power transmittingconnections4 to the' reversing shafts, substantially as and for thepurpose specified.

12. The combination with a `vehicle having a pair of traction wheels anda steering wheel; of "trxinsmission gearing comprising a driving elementincluding a differential gearing, driven shafts for actuating thetraction wheels respectively, means for connecting and disconnecting thedriven shafts and opposite gears of the differential gearingrespectively, and means for locking the differential gearing,substantially as and for the purpose set forth.

13. The combination of a vehicle having a pair of traction Wheels and asteering Wheel; of a transmission gear includinga differential'gearing,driven shafts connected to the traction wheels' respective1y,` reversingshafts connected to the traction wheels respectively, means forconnecting and disconnecting the driven shafts and opposite gears of thedifferential gear, means for connecting the reversing shafts andopposite gears of the differential gearing, and

means for locking the differential gearing, substantially as and for thepurpose described. l Y

In testimony whereof, I have hereunto signed my name in the presence oftwo attesting witnesses, at Syracuse, in the county of Onondaga, intheState of New.York. this 27th day of April, 1914.

CHARLES S. BROWN.'

Witnesses:

.- Crus. H. YOUNG,

JANE H. GLAzmR.

